If you want to occupy a seat, you have to go to see it often. If there are few or no books on the desk, sit on it and put many of your books there (preferably more). Then you should go there often. Most of the libraries of Jiaotong University are graduate students and often go there. If you don't go later, this seat will be someone else's. ...

There is another way, that is, when the school is on holiday, many people will take the books back, so you should take this opportunity to put them there. If there is unfinished homework on the desk, no one will come.